#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using Pi = pair<int, int>;
using Pl = pair<ll, ll>;
using Ti = tuple<int, int, int>;
using Tl = tuple<ll, ll, ll>;

#define pb push_back
#define eb emplace_back
#define mp make_pair
#define mt make_tuple
#define F first
#define S second
#define Get(t, i) get<(i)>((t))
#define all(v) (v).begin(), (v).end()
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define reps(i, f, n) for(int i = (int)(f); i < (int)(n); i++)
#define each(a, b) for(auto& a : b)

const int inf = 1 << 25;
const ll INF = 1LL << 55;

int main()
{
  string S;
  cin >> S;
  int idx = S.find("ccw");
  cout << min(idx+1, (int)S.size()-idx-2) << endl;
  return 0;
}